Quantifying stress responses in buried gas pipelines under heavy-duty vehicle loads
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00602048" target="_blank" >RIV/68378297:_____/24:00602048 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.9734/bpi/srnta/v7/3024" target="_blank" >https://doi.org/10.9734/bpi/srnta/v7/3024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.9734/bpi/srnta/v7/3024" target="_blank" >10.9734/bpi/srnta/v7/3024</a>
Alternative languages
Result language
angličtina
Original language name
Quantifying stress responses in buried gas pipelines under heavy-duty vehicle loads
Original language description
The aim of this article is to quantify the loads exerted by heavy-duty vehicles whencrossing over a buried pipeline. These loads are important in deciding about the use of protective sleeves (casings) applied to gas pipelines in regions withnincreased demands on pipeline operation safety. Experiments were conducted on a test pipe section made from L360NE pipeline steel equipped with strain gauges along the pipe perimeter to measure strains in the axial and circumferentialndirections. Strain measurements were taken after back-filling the pipe trench, then during vehicle crossings over the empty pipe, and again after pressurizing the test pipe with air. Besides this, an engineering estimation of the state of stress of a buried pipe was also made. The results showed that the weight of the backfill, acting on an empty pipe, causes an ovalness of the circular cross-section of the pipe giving thus the rise of through-wall bending stresses with the tensile stress at the outside surface at the 3 and 9 o´clock positions, and compressive stress at the inside surface. At the 6 and 12 o´clock positions, the stresses are tensile at the inside surface and compressive at the outside surface. Strain-based hoop stresses at the surface of the empty test pipe were found to exceed 30 MPa after back-filling the trench and increased to more than 40 MPa during the vehicle crossings. Axial stresses reached extremes of around 17 MPa in compression and 12 MPa in tension.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Scientific research, new technologies and applications
ISBN
978-93-48388-40-7
Number of pages of the result
21
Pages from-to
161-181
Number of pages of the book
211
Publisher name
BP International
Place of publication
Kalkata
UT code for WoS chapter
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